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    -- What are they doing for vacation? -- They’re at home. A. relaxing B. relaxed C. relax D. relaxes 【查看更多】

     

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    —What are they doing for vacation?   
    —They're ______ at home.   

    [     ]
    A. relaxing         
    B. relaxed    
    C. relax        
    D. relaxes 

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